/Engine/Plugins/Importers/USDImporter/Source/UnrealUSDWrapper/Public/UnrealUSDWrapper.h
Creates a new USD root layer file, opens it as a new stage and returns that stage
static [UE::FUsdStage](API\Plugins\UnrealUSDWrapper\UsdWrappers\FUsdStage) NewStage ( const TCHAR * FilePath )